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Group-III Nitride Etch Selectivity in BCl(3)/Cl(2) ICP Plasmas

Description: Patterning the group-IH nitrides has been challenging due to their strong bond energies and relatively inert chemical nature as compared to other compound semiconductors. Plasma etch processes have been used almost exclusively to pattern these films. The use of high-density plasma etch systems, including inductively coupled plasmas (ICP), has resulted in relatively high etch rates (often greater than 1.0 pmhnin) with anisotropic profiles and smooth etch morphologies. However, the etch mechanism… more
Date: December 9, 1998
Creator: Abernathy, C.R.; Han, J.; Hong, J.; Lester, L.F.; Pearton, S.J.; Shul, R.J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tank waste remediation system mission analysis report

Description: This document describes and analyzes the technical requirements that the Tank Waste Remediation System (TWRS) must satisfy for the mission. This document further defines the technical requirements that TWRS must satisfy to supply feed to the private contractors` facilities and to store or dispose the immobilized waste following processing in these facilities. This document uses a two phased approach to the analysis to reflect the two-phased nature of the mission.
Date: January 9, 1998
Creator: Acree, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Biological Monitoring Program for East Fork Poplar Creek

Description: In May 1985, a National Pollutant Discharge Elimination System (NPDES) permit was issued for the Oak Ridge Y-12 Plant. As a condition of the permit, a Biological Monitoring and Abatement Program (BMAP) was developed to demonstrate that the effluent limitations established for the Y-12 Plant protect the classified uses of the receiving stream (East Fork Poplar Creek; EFPC), in particular, the growth and propagation of aquatic life (Lear et al. 1989). A second objective of the BMAP is to document… more
Date: September 9, 1998
Creator: Adams, S. M.; Beaty, T. W.; Brandt, C. C.; Christensen, S. W. & Cicerone, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Observation of resonant energy transfer between identical-frequency laser beams

Description: Enhanced transmission of a low intensity laser beam is observed when crossed with an identical-frequency beam in a plasma with a flow velocity near the ion sound speed. The time history of the enhancement and the dependence on the flow velocity strongly suggest that this is due to energy transfer between the beams via a resonant ion wave with zero frequency in the laboratory frame. The maximum energy transfer has been observed when the beams cross in a region with Mach 1 flow. The addition of f… more
Date: December 9, 1998
Creator: Afeyan, B. B.; Cohen, B. I.; Estabrook, K. G.; Glenzer, S. H.; Joshi, C.; Kirkwood, R. K. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Micromachined Systems-on-a-Chip: Infrastructure, Technology and Applications

Description: A review is made of the infrastructure, technology and capabilities of Sandia National Laboratories for the development of micromechanical systems that have potential space applications. By incorporating advanced fabrication processes, such as chemical mechanical polishing, and several mechanical polysilicon levels, the range' of rrticromechanical systems that can be fabricated in these technologies is virtually limitless. Representative applications include a micro- engine driven mirror, and a… more
Date: October 9, 1998
Creator: Allen, J. J.; Krygowski, T. W.; Miller, S. L.; Montague, S.; Rodgers, M. S.; Schriner, H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tank waste remediation system retrieval and disposal mission key enabling assumptions

Description: An overall systems approach has been applied to develop action plans to support the retrieval and immobilization waste disposal mission. The review concluded that the systems and infrastructure required to support the mission are known. Required systems are either in place or plans have been developed. An analysis of the programmatic, management and technical activities necessary to declare Readiness to Proceed with execution of the mission demonstrates that the system, people, and hardware wil… more
Date: January 9, 1998
Creator: Baldwin, J. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Argonne National Laboratory Institutional Plan FY 1999 - FY 2004.

Description: The ''Institutional Plan'' is the culmination of Argonne's annual planning cycle. This document outlines the Laboratory's plans for the optimal development of its research programs and support operations, in the context of national research and development needs, the missions of the Department of Energy and Argonne National Laboratory, and expected resource constraints. The ''Institutional Plan'' is the product of internal planning and extensive discussions with DOE managers.
Date: December 9, 1998
Creator: Beggs, S. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Core Transport Reduction in Tokamak Plasmas with Modified Magnetic Shear

Description: Spontaneous improvements of plasma confinement during auxiliary heating have been observed in many tokamaks when the q profile has been modified from its normal resistive equilibrium so that q is greater than 1 and the magnetic shear is reduced or reversed in a region near the magnetic axis. The effects on the overall plasma confinement result from the formation in the plasma interior of transport barriers, regions where the thermal and particle transport coefficients are substantially reduced.… more
Date: July 9, 1998
Creator: Bell, M. G.; Bell, R. E.; Efthimion, P. C.; Ernst, D. R. & Fredrickson, E. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ATLAS: A Small, Light Weight, Time-Synchronized Wind-Turbine Data Acquistion System

Description: Wind energy researchers at Sandia National Laboratories have developed a small, lightweight, time- synchronized, robust data acquisition system to acquire long-term time-series data on a wind turbine rotor. A commercial data acquisition module is utilized to acquire data simultaneously from multip!e strain-gauge, analog, and digital channels. Acquisition of rotor data at precisely the same times as acquisition of ground data is ensured by slaving the acquisition clocks on the rotor- based data … more
Date: November 9, 1998
Creator: Berg, D.E.; Robertson, P. & Zayas, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Second Argonne theory institute on differentiation of computational approximations of functions.

Description: A Theory Institute on ''Differentiation of Computational Approximations to Functions'' was held at Argonne National Laboratory on May 18--20, 1998. The institute was organized by Christian Bischof and Paul Hovland of the Mathematics and Computer Science Division at Argonne National Laboratory. The Theory Institute brought together 38 researchers from the US, Great Britain, France, and Germany. Mathematicians, computer scientists, physicists, and engineers from diverse disciplines discussed adva… more
Date: October 9, 1998
Creator: Bischof, C.H.; Eberhard, P. & Hovland, P.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Regional Coordination and Analysis of OCRWM Transportation Program: Fourth Quarter and Final Report, April 15, 1997 - April 14, 1998

Description: This is the fourth quarter report on the activities of the High-Level Radioactive Waste Committee of the Western Interstate Energy Board. Together with the first three quarterly reports, this constitutes a final report. Over the course of the year, work under this contract has focused on: 1. Efforts to improved the Department's proposal to implement Section 180(c) of the Nuclear Waste Policy Act. (DOE has since suspended its efforts to implement this provision of the law.); 2. Advice to DOB on … more
Date: June 9, 1998
Creator: Board, Western Interstate Energy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effective Use of Molecular Recognition in Gas Sensing: Results from Acoustic Wave and In-Situ FTIR Measurements

Description: To probe directly the analyte/film interactions that characterize molecular recognition in gas sensors, we recorded changes to the in-situ surface vibrational spectra of specifically fictionalized surface acoustic wave (SAW) devices concurrently with analyte exposure and SAW measurement of the extent of sorption. Fourier-lmnsform infrared external- reflectance spectra (FTIR-ERS) were collected from operating 97-MH2 SAW delay lines during exposure to a range of analytes as they interacted with t… more
Date: December 9, 1998
Creator: Bodenhofer, K,; Gopel, W.; Hierlemann, A. & Ricco, A.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An overview of U.S. decommissioning experience -- A basic introduction

Description: This paper presents an overview of the US experiences in the decommissioning technical area. Sections included are: (1) an overview of the magnitude of the problem, (2) a review of the US decommissioning process, (3) regulation of decommissioning, (4) regulatory and funding requirements for decommissioning, and (5) a general overview of all on-going and completed decommissioning projects to date in the US. The final section presents a review of some issues in the decommissioning area currently … more
Date: March 9, 1998
Creator: Boing, L.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tank waste remediation system environmental program plan

Description: This Environmental Program Plan has been developed in support of the Integrated Environmental, Safety and Health Management System and consistent with the goals of DOE/RL-96-50, Hanford Strategic Plan (RL 1996a), and the specifications and guidance for ANSI/ISO 14001-1996, Environmental Management Systems Specification with guidance for use (ANSI/ISO 1996).
Date: January 9, 1998
Creator: Borneman, L. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ceramic component development analysis -- Volume 1. Final report

Description: The development of advanced filtration media for advanced fossil-fueled power generating systems is a critical step in meeting the performance and emissions requirements for these systems. While porous metal and ceramic candle-filters have been available for some time, the next generation of filters will include ceramic-matrix composites (CMCs) (Techniweave/Westinghouse, Babcock and Wilcox (B and W), DuPont Lanxide Composites), intermetallic alloys (Pall Corporation), and alternate filter geome… more
Date: June 9, 1998
Creator: Boss, D. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Plasma Heating in Highly Excited GaN/AlGaN Multiple Quantum Wells

Description: Plasma Heating in Highly Excited GaN/AIGaN Multiple Quantum @@lvEu Wells w f + 1998 %p, K. C. Zeng, R. Mair, J. Y. Liz and H. X. Jiang a) ` fabrication and understanding of MQW lasers [2-5]. For the design of these lasers, one on RT optical studies. Our results revealed that in the GaN/AIGaN MQWS, plasma heating strongly effects the carrier distribution between the confined and unconfined band-to-band and fke excitonic transitions [7]. In the MQW sample under low the unconfined states as determ… more
Date: October 9, 1998
Creator: Botchkarev, A.; Chow, W.W.; Jiang, H.X.; Lin, J.Y.; Mair, R.; Morkoc, H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Flammable gas project expert elicitation results for Hanford Site double-shell tanks

Description: This report documents the results of the second phase of parameter quantification by the flammable gas expert panel. This second phase is focused on the analysis of flammable gas accidents in the Hanford Site double-shell tanks. The first phase of parameter quantification, performed in 1997 was focused on the analysis of Hanford single-shell tanks.
Date: July 9, 1998
Creator: Bratzel, D.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Optimizing Algorithm for Automating Lifecycle Assembly Processes

Description: Designing products for ~ assembly and disassembly during its entire Iifecycle for purposes including service, field repair, upgrade, and disposal is a process that involves many disciplines. In additiou finding the best solution often involves considering the design as a whole and by considering its intended Iifecycle. DifFerent goals and cortstmints (compared to initial assembly) require us to re-visit the significant fi,mdamental assumptions and methods that underlie current assembly planning… more
Date: December 9, 1998
Creator: Brown, R.G. & Calton, T.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Application experiences with the Globus toolkit.

Description: The Globus grid toolkit is a collection of software components designed to support the development of applications for high-performance distributed computing environments, or ''computational grids'' [14]. The Globus toolkit is an implementation of a ''bag of services'' architecture, which provides application and tool developers not with a monolithic system but rather with a set of stand-alone services. Each Globus component provides a basic service, such as authentication, resource allocation,… more
Date: June 9, 1998
Creator: Brunett, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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